Science Thread

[Soldier30]

Boeing said it is working on a new quality issue for the Boeing 737 MAX and Boeing 787 Dreamliner. It is worth noting that the problem with the quality of Boeing aircraft can already be called a detective story, since two informants who reported them have already died under mysterious circumstances. Bloomberg published a report from Boeing's quality control inspector. Sam Mohawk said: Boeing lost 400 defective parts that - either intentionally or by mistake - could have been installed on new planes. Records of where and how defective components were stored disappeared from internal archives.
On June 18, a hearing was held in the US Senate, at which Boeing CEO David Calhoun spoke and answered questions from congressmen who criticized the corporation for numerous problems with the quality of aircraft. According to media reports, the head of Boeing had to justify himself in the Senate because of his salary of more than $30 million and the concealment of spare parts; he also apologized for problems with flight safety.
Problems with the Boeing 737 MAX became known 5 years ago, the same problems with the Boeing 787 Dreamliner, in short, they are all related to the acceleration of aircraft production, a problem with parts from suppliers and savings on wages for engineers, designers and programmers. Boeing has said it continues to refine and improve its aircraft manufacturing process, but scandals have plagued the company, which has already impacted its financial performance.

 

[Soldier30]

The Soviet, the last surviving reusable spacecraft "Buran", known as "Baikal", will be restored in Russia. The collection of the museum complex in Verkhnyaya Pyshma has been replenished with the manned spacecraft "Buran" created in 1993, it will be restored. The first apparatus of the "Buran" program flew on November 15, 1988 and is now destroyed. The second Buran spacecraft, known as Burya, never flew in space and is stored at Baikonur. The third Buran spacecraft, whose flight planned for 1994 also did not take place, the program being closed at that time, will be placed in a museum near Yekaterinburg after restoration. The reusable Buran spacecraft looks like the American Space Shuttle, but unlike it, it had the ability to land in automatic mode and emergency ejection of the crew. Buran was also capable of long flights, up to 30 days, orbital maneuvering, controlled descent and aircraft landing at a specially equipped airfield. Due to lack of funding, after the collapse of the Soviet Union, the Buran program was transferred from the Ministry of Defense to the Russian Space Agency and was closed in 1993.

 

[Soldier30]

Rosatom showed how a Russian laser is used to dispose of 40-meter cranes at a coal storage site of a thermal power plant in Kurgan. The mobile laser complex was used at a distance of 100 meters from the object; the laser is capable of cutting metal up to 260 mm thick at a distance of up to 300 meters. Laser logging, in the link to the video in the comments to the video.

 

[Soldier30]

Footage of the US testing of the HAPS stratospheric airship by Sceye. The unmanned 65-meter HAPS airship is filled with helium and equipped with solar panels, which will allow it to stay in the air for months. Tests have confirmed that the charge from the solar panels is enough for electric motors and the use of the airship in the air around the clock. The Sceye HAPS airship is capable of rising to a height of 19 kilometers. First of all, the airship is designed to provide mobile communications and the Internet to hard-to-reach places in the USA. During the HAPS tests, it was possible to distribute the LTE network to a smartphone on the ground at a distance of 140 km, using a special antenna. The HAPS airship will also monitor climate change, forest fires and other natural disasters.

 

[Soldier30]

Elon Musk showed prototypes of two new Tesla products at once: the Cybercab robotic taxi and the Robovan driverless van. The Optimus humanoid robot was also shown. The Cybercab robotic taxi can be used not only for personal use, but also rented out, making money on it. Tesla has assembled at least 50 Cybercabs and plans to launch mass production no later than 2027. The price of one Cybercab taxi for entrepreneurs will be less than 30 thousand dollars. There is no steering wheel or pedals in the Cybercab, since human control is not provided at all, the car operates completely in unmanned mode. The Cybercab car will be charged inductively, without the need to connect to the network. Musk said that autonomous cars will be 10-20 times safer than those controlled by people. A ride on a Cybercab will cost 20 cents per 1.6 km, for comparison, on a bus it costs $ 1.

The Robovan driverless van will be able to transport 20 people, it also has a numb steering wheel and pedals, it can be converted into a cargo version. The Optimus robot attracted the most attention from the public, in the future it can become one of the family members. They promise that the Optimus robot will be able to clean the house, walk the dog, mow the lawn, water the plants, set the table, wipe the dust, play with children and much more. Optimus robots are already being adapted for work in production and as auto mechanics.

 

[Soldier30]

The first hovering flight was performed by the Russian modernized Mi-34 M1 helicopter, equipped with a VK-650V turboshaft engine manufactured by UEC-Klimov. The Mi-34M1 helicopter is a modernized version of the light helicopter of the Mi-34S family, equipped with piston engines. Serial production of the VK-650V engine, designed for Russian multi-purpose and special helicopters with a takeoff weight of up to 4 tons, is planned to be launched in 2025. A new gearbox was also tested on the helicopter. It is believed that the helicopter will compete with the most popular family of GA helicopters in the world, Robinson.

 

[Soldier30]

A spectacular video of the Lynx robot-dog hybrid with a wheeled chassis moving quickly across rough terrain was shown by the Chinese company Deep robotics. Note how fast the four-legged robot moves through the forest. When such a robot is equipped with a payload, in the form of cameras or weapons, it is possible to quickly and effectively conduct reconnaissance of the area or other operations. Most people do not take this seriously yet, but military robots of this type will be used in the near future. In China, a group operation of military robot dogs was recently shown.

 

[BlackWindMnt]

A spectacular video of the Lynx robot-dog hybrid with a wheeled chassis moving quickly across rough terrain was shown by the Chinese company Deep robotics. Note how fast the four-legged robot moves through the forest. When such a robot is equipped with a payload, in the form of cameras or weapons, it is possible to quickly and effectively conduct reconnaissance of the area or other operations. Most people do not take this seriously yet, but military robots of this type will be used in the near future. In China, a group operation of military robot dogs was recently shown.

Especially combined with more denser and longer lasting batteries it should be interesting what those Chinese designers can come up with.

 

[anzha]

Not our usual bailiwick, but I just got back from SC24. This is Supercomputing (SC), the largest conference on high performance computing (for now) in the world. They stuck up a map and encouraged people to put up stickers from where they were from. The conference was in Atlanta, so it would be very US centric, but you can see there is a large international participation. Given this forum's focus, there were several Chinese manufacturers, HPC sites and universities. SC is an interesting mix of academic, vendor, and tech oriented. It's retained the academia aspect many others never had or lost.

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The top 500 systems, but rumors have been around for a while the fastest systems are not on the list anymore (China and US):

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Just may be of interest.

 

[Soldier30]

At the Torbeevo airfield in the Moscow region, a new Russian light-engine aircraft Tango, developed by S7 Group in a year and a half, was presented. The Tango aircraft is ideal for training civil aviation pilots and for private flights. The aircraft is reported to be made of Russian composite materials. Previously, the aircraft was equipped with a Belgian UL Power 520is engine, now a Russian engine is installed, but its model is not reported. It is noted that the Russian engine can be installed on other aircraft models. According to testers, the key advantage of the Tango aircraft is the ability to fly at a speed of 80 km / h and even 65 km / h in a takeoff configuration. The maximum takeoff weight of the S7 Tango aircraft is 1,150 kg, the maximum flight range is 1,100 km, the aircraft is capable of transporting 4 people at a speed of up to 245 km / h. The takeoff and landing distance of the aircraft is 550 meters.